The USA imports ~0% of its natural gas from Russia, >98% from Canada, all dwarfed by its exports though making it one of the LNG sellers Asia and Europe are turning to, as described in the article.
That’s assuming the DoE doesn’t at some point need to prioritize domestic needs over exports like Russia did however, as described in the article.
My comment was also about North America, which includes Mexico and critically Canada. But if you’d like more about the US, here’s a nice recent overview of its natural gas trade: https://www.eia.gov/todayinenergy/detail.php?id=49156